CN103347143A - Large-scale professional-class networked audio-video processing device and processing method thereof - Google Patents

Abstract

Disclosed in the invention is a large-scale professional-class networked audio-video processing device. The processing device is characterized in that the device comprises an audio processing device, a character superimposition processor, a digital/analog converter, an audio-video clock synchronization circuit, an audio-video compression card, and an audio-video backup device, wherein the above-mentioned components are successively connected. In addition, the processing device also includes a video processing device and a communication unit; the video processing device is connected with the character superimposition processor; and the communication unit is connected with the audio-video compression card. Besides, the invention also discloses a processing method utilizing the device to carry out processing on networked audio-video data. According to the invention, the processing device that has a standard audio input interface and supports various audio input modes has functions of sound effect balancing, volume adjusting, dynamic range controlling, direct current filtering, and deemphasis and the like. And the system has the automatic frequency detection function; and a sampling frequency of audio signal inputting can be detected automatically and a filter coefficient of a corresponding frequency band can be automatically loaded.

Description

The professional networked audio frequency and video treatment facility of large stadium and processing method thereof

Technical field

The invention belongs to the broadcast television industry audio frequency and video and make the playing device field, be specifically related to the professional networked audio frequency and video treatment facility of a kind of large stadium, and the method for utilizing this device processes audio, video data.

Background technology

The appearance of digital technology of 19th century has brought tremendous influence for people's work and life, and in the digital times of this scientific and technological develop rapidly, digital audio technology then can deserve to be called one of most widely used digital technology in the Digital Signal Processing.The major advantage of digital audio technology is to improve the quality of audio signal, strengthens the antijamming capability of signal, is convenient to storage, transmission and the processing of signal.

But, existing apparatus for processing audio, do not have the sample frequency of automatic detection input audio signal and automatically load the filter coefficient of corresponding band and support multiple audio frequency pattern of the input, and have audio equilibrium, volume adjusting, dynamic range control, DC filtering, a series of functions such as postemphasis; Simultaneously, the image data acquiring frame rate of conventional video processing device, image analytic degree parameter can not arrange in real time according to client's suggestion.

Therefore, handle for designing a total digitalization, networked audio frequency and video treatment facility low-cost, high-effect, compact appearance provides may.

Summary of the invention

At the deficiencies in the prior art, the present invention is devoted to provide a kind of a kind of large stadium that addresses the above problem professional networked audio frequency and video treatment facility, and the method for utilizing this device processes audio, video data.

The technical scheme that the present invention adopts for achieving the above object is:

The professional networked audio frequency and video treatment facility of a kind of large stadium, it comprises an apparatus for processing audio, a character overlap-add procedure device, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audio frequency and video compressing card, an audio frequency and video back-up device that connects successively; It also comprises a video process apparatus, a communication unit, and described video process apparatus is connected with character overlap-add procedure device; Described communication unit is connected with the audio frequency and video compressing card.

It also comprises an audio collecting device and a video acquisition device, and described audio collecting device is connected with apparatus for processing audio, and described video acquisition device is connected with video process apparatus.

Described apparatus for processing audio, it comprises that a DSP digital audio processor, a serial audio interface, an I2C interface, a data path, a coefficient register, a control register, an automatic frequency detect and filter coefficient selection function module, a volume adjusting function module, a L channel voice data output port and a right audio channel data-out port;

Described DSP digital audio processor is connected with control register, coefficient register, data path respectively;

Described serial audio interface is connected with serial voice data input signal cable, serial clock signal line, data path, control register respectively;

Described automatic frequency detects and is connected with serial voice data input signal cable, serial clock signal line, coefficient register, control register respectively with filter coefficient selection function module;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described volume adjusting function module is connected with controller register, data path respectively;

Described data path is connected with L channel voice data output port, right audio channel data-out port respectively;

Described L channel voice data output port, right audio channel data-out port are connected with character adder respectively.

Described video process apparatus, it comprises a HDMI video matrix processor, a HDMI Video Decoder, an I2C interface, a coefficient register, a control register, a HDMI video encoder, a video inputs mouth and a video-out port;

Described HDMI video matrix processor is connected with HDMI Video Decoder, HDMI video encoder, coefficient register, control register respectively;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described video inputs mouth is connected with video data input line, HDMI Video Decoder respectively, control register;

Described HDMI video encoder is connected with video-out port;

Described video-out port is connected with character adder.

Described audio frequency and video clock synchronization circuit, it adopts chip MK2745 to finish the synchronous of video and audio frequency.

Described communication unit, it comprises the antenna that a RJ45 interface that is connected with ethernet interface module and a Wi-Fi module connect, described audio frequency and video compressing card is connected with ethernet interface module, Wi-Fi module respectively.

Described audio frequency and video back-up device, it is a CD writer, described CD writer is built-in with an audio frequency and video recording function module and data storage hard disk.

A kind of processing method of utilizing the processing audio, video data of the professional networked audio frequency and video treatment facility of above-mentioned large stadium, it comprises the steps:

(1) the professional networked audio frequency and video treatment facility of a large stadium is set, opening power makes it in running order;

(2) initialization of the professional networked audio frequency and video treatment facility of large stadium;

(3) apparatus for processing audio receives and the voice data of audio collecting device collection is handled;

Video process apparatus receives and the video data of video acquisition device collection is handled;

(4) the transmission character adder of data message after step (3) is handled, sending position, area information, scheme of colour, the output format of character on image of the font of needs stacks to character stack interface function handles, give digital/analog converter alternately with result again, be converted to digital signal;

(5) with the digital signal of step (4), be transmitted to the audio frequency and video clock synchronization circuit and handle, the data message after handling is transmitted to the audio frequency and video compressing card; At first, the data message of receiving is divided into polylith, every is divided into a size and is the video sequence of the audio, video data formation of 8*8, described audio frequency and video compressing card adopts DCT based encode device that the data message of receiving is compressed, described DCT based encode device comprises a DCT variator, a quantizer and an entropy coder, wherein, the DCT variation function of DCT variator employing is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{i=0}{\overset{7}{\mathrm{\Σ}}}\underset{j=0}{\overset{7}{\mathrm{\Σ}}}f(i,j)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0;

Otherwise C (u), C are (v)=1;

F (i, j) in the video sequence that constitutes for the audio, video data of 8*8, when the audio, video data of pre-treatment, wherein, and i, j is the locus of audio, video data in the video sequence of 8*8 when pre-treatment;

(6) data message after step (5) processing is transmitted to audio frequency and video back-up device, communication unit respectively, described audio frequency and video back-up device backs up audio, video data,

One audio frequency and video decompressing device and a playing device are set, and described communication unit sends to the audio frequency and video decompressing device with audio, video data, sends playing device again to and plays in real time;

Described audio frequency and video decompressing device, adopt DCT base decoder that the data message of receiving is decompressed, described DCT based encode device comprises the contrary variator of an entropy decoder, an inverse DCT and a DCT, and wherein, the DCT inversion function that the contrary variator of DCT adopts is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{u=0}{\overset{7}{\mathrm{\Σ}}}\underset{v=0}{\overset{7}{\mathrm{\Σ}}}F(u,v)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0,

Otherwise C (u), C are (v)=1.

It specifically comprises the steps: described step (2)

(21) automatic frequency of apparatus for processing audio detects and filter coefficient selection function module, and the audio, video data of voice data input signal cable is analyzed; Send order again to the DSP digital audio processor, send order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperate coefficient register again, finish the setting of filter coefficient;

(22) video process apparatus sends order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperates coefficient register, finishes the setting of image data acquiring frame rate, image analytic degree parameter;

(23) character adder is set its character size, the character location parameter on image;

(24) audio frequency and video compressing card is set its compression parameters;

There is not sequencing between described step (21), step (22), step (23) and the step (24).

It specifically comprises the steps: described step (3)

(31) audio frequency and video processing unit, audio, video data to the voice data input signal cable is analyzed, analysis result is sent to the DSP digital audio processor, described DSP digital audio processor is according to analysis result, send order to the volume adjusting function module of the adjusting that realizes volume, again volume is regulated the result and send to data path;

The voice data information that audio collecting device is gathered, pass through serial audio interface, after handing to the data path processing that is provided with equalizer, filter, send to character adder through L channel voice data output port, right audio channel data-out port respectively again;

(32) video process apparatus, video acquisition device sends to the HDMI Video Decoder with the video data of gathering by the video inputs mouth and handles, the processed video data message is transmitted to HDMI video matrix processor to be handled, the processed video data message is transmitted to the HDMI video encoder handles, send to character overlap-add procedure device finally by video-out port;

Described step (31), step do not have sequencing between (32).

Apparatus for processing audio of the present invention has the serial audio input interface of standard, support multiple audio frequency pattern of the input, function such as have audio equilibrium, volume adjusting, dynamic range control, DC filtering, postemphasis, system has the automatic frequency measuring ability, can detect sample frequency and the automatic filter coefficient that loads corresponding band of input audio signal automatically.Apparatus for processing audio of the present invention, video process apparatus can make the user suitable parameters to be set according to concrete environment for use by control register and the filter coefficient of I2C interface configuration inside, obtain best vision and auditory effect.

Video process apparatus of the present invention also can be according to the real-time setting to image data acquiring frame rate, image analytic degree parameter of client's needs.

Below in conjunction with accompanying drawing and embodiment, the present invention is further described.

Description of drawings

Fig. 1 is overall structure frame diagram of the present invention;

Fig. 2 is the structural framing figure of the apparatus for processing audio among Fig. 1;

Fig. 3 is the structural framing figure of the video process apparatus among Fig. 1;

Fig. 4 is the compression process figure of the audio frequency and video compressing card among Fig. 1;

Fig. 5 is the decompression flow process figure of Fig. 1 middle pitch video decompression apparatus;

Wherein:

1. serial voice data input signal cable 2. serial clock signal lines

3.I2C clock input signal line 4.I2C data input signal line

5. video data input line

Embodiment

Referring to Fig. 1～Fig. 3, the invention provides the professional networked audio frequency and video treatment facility of a kind of large stadium, it comprises an apparatus for processing audio, a character overlap-add procedure device, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audio frequency and video compressing card, an audio frequency and video back-up device that connects successively; It also comprises a video process apparatus, a communication unit, and described video process apparatus is connected with character overlap-add procedure device; Described communication unit is connected with the audio frequency and video compressing card.

It also comprises an audio collecting device and a video acquisition device, and described audio collecting device is connected with apparatus for processing audio, and described video acquisition device is connected with video process apparatus.

Described apparatus for processing audio, it comprises that a DSP digital audio processor, a serial audio interface, an I2C interface, a data path, a coefficient register, a control register, an automatic frequency detect and filter coefficient selection function module, a volume adjusting function module, a L channel voice data output port and a right audio channel data-out port;

Described DSP digital audio processor is connected with control register, coefficient register, data path respectively;

Described serial audio interface is connected with serial voice data input signal cable, serial clock signal line, data path, control register respectively;

Described automatic frequency detects and is connected with serial voice data input signal cable, serial clock signal line, coefficient register, control register respectively with filter coefficient selection function module;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described volume adjusting function module is connected with controller register, data path respectively;

Described data path is connected with L channel voice data output port, right audio channel data-out port respectively;

Described L channel voice data output port, right audio channel data-out port are connected with character adder respectively.

Described video process apparatus, it comprises a HDMI video matrix processor, a HDMI Video Decoder, an I2C interface, a coefficient register, a control register, a HDMI video encoder, a video inputs mouth and a video-out port;

Described HDMI video matrix processor is connected with HDMI Video Decoder, HDMI video encoder, coefficient register, control register respectively;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described video inputs mouth is connected with video data input line, HDMI Video Decoder respectively, control register;

Described HDMI video encoder is connected with video-out port;

Described video-out port is connected with character adder.

Described audio frequency and video clock synchronization circuit, it adopts chip MK2745 to finish the synchronous of video and audio frequency.

Described communication unit, it comprises the antenna that a RJ45 interface that is connected with ethernet interface module and a Wi-Fi module connect, described audio frequency and video compressing card is connected with ethernet interface module, Wi-Fi module respectively.

Described audio frequency and video back-up device, it is a CD writer, described CD writer is built-in with an audio frequency and video recording function module and data storage hard disk.

A kind of processing method of utilizing the processing audio, video data of the professional networked audio frequency and video treatment facility of above-mentioned large stadium, it comprises the steps:

(1) the professional networked audio frequency and video treatment facility of a large stadium is set, opening power makes it in running order;

(2) initialization of the professional networked audio frequency and video treatment facility of large stadium;

(3) apparatus for processing audio receives and the voice data of audio collecting device collection is handled;

Video process apparatus receives and the video data of video acquisition device collection is handled;

(4) the transmission character adder of data message after step (3) is handled, sending position, area information, scheme of colour, the output format of character on image of the font of needs stacks to character stack interface function handles, give digital/analog converter alternately with result again, be converted to digital signal;

(5) with the digital signal of step (4), be transmitted to the audio frequency and video clock synchronization circuit and handle, the data message after handling is transmitted to the audio frequency and video compressing card; At first, the data message of receiving is divided into polylith, every is divided into a size and is the video sequence of the audio, video data formation of 8*8, described audio frequency and video compressing card adopts DCT based encode device that the data message of receiving is compressed, described DCT based encode device comprises a DCT variator, a quantizer and an entropy coder, wherein, the DCT variation function of DCT variator employing is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{i=0}{\overset{7}{\mathrm{\Σ}}}\underset{j=0}{\overset{7}{\mathrm{\Σ}}}f(i,j)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0; Otherwise C (u), C are (v)=1;

F (i, j) in the video sequence that constitutes for the audio, video data of 8*8, when the audio, video data of pre-treatment, wherein, and i, j is the locus of audio, video data in the video sequence of 8*8 when pre-treatment;

(6) data message after step (5) processing is transmitted to audio frequency and video back-up device, communication unit respectively, described audio frequency and video back-up device backs up audio, video data,

One audio frequency and video decompressing device and a playing device are set, and described communication unit sends to the audio frequency and video decompressing device with audio, video data, sends playing device again to and plays in real time;

Described audio frequency and video decompressing device, adopt DCT base decoder that the data message of receiving is decompressed, described DCT based encode device comprises the contrary variator of an entropy decoder, an inverse DCT and a DCT, and wherein, the DCT inversion function that the contrary variator of DCT adopts is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{u=0}{\overset{7}{\mathrm{\Σ}}}\underset{v=0}{\overset{7}{\mathrm{\Σ}}}F(u,v)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0,

Otherwise C (u), C are (v)=1.

It specifically comprises the steps: described step (2)

(21) automatic frequency of apparatus for processing audio detects and filter coefficient selection function module, and the audio, video data of voice data input signal cable is analyzed; Send order again to the DSP digital audio processor, send order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperate coefficient register again, finish the setting of filter coefficient;

(22) video process apparatus sends order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperates coefficient register, finishes the setting of image data acquiring frame rate, image analytic degree parameter;

(23) character adder is set its character size, the character location parameter on image;

(24) audio frequency and video compressing card is set its compression parameters;

There is not sequencing between described step (21), step (22), step (23) and the step (24).

It specifically comprises the steps: described step (3)

(31) audio frequency and video processing unit, audio, video data to the voice data input signal cable is analyzed, analysis result is sent to the DSP digital audio processor, described DSP digital audio processor is according to analysis result, send order to the volume adjusting function module of the adjusting that realizes volume, again volume is regulated the result and send to data path;

The voice data information that audio collecting device is gathered, pass through serial audio interface, after handing to the data path processing that is provided with equalizer, filter, send to character adder through L channel voice data output port, right audio channel data-out port respectively again;

(32) video process apparatus, video acquisition device sends to the HDMI Video Decoder with the video data of gathering by the video inputs mouth and handles, the processed video data message is transmitted to HDMI video matrix processor to be handled, the processed video data message is transmitted to the HDMI video encoder handles, send to character overlap-add procedure device finally by video-out port;

Described step (31), step do not have sequencing between (32).

Apparatus for processing audio of the present invention has the serial audio input interface of standard, support multiple audio frequency pattern of the input, function such as have audio equilibrium, volume adjusting, dynamic range control, DC filtering, postemphasis, system has the automatic frequency measuring ability, can detect sample frequency and the automatic filter coefficient that loads corresponding band of input audio signal automatically.Apparatus for processing audio of the present invention, video process apparatus can make the user suitable parameters to be set according to concrete environment for use by control register and the filter coefficient of I2C interface configuration inside, obtain best vision and auditory effect.

Video process apparatus of the present invention also can be according to the real-time setting to image data acquiring frame rate, image analytic degree parameter of client's needs.

The present invention is not limited to above-mentioned execution mode, and all employings and similarity method of the present invention and system configuration realize all modes of the object of the invention, all within protection scope of the present invention.

Claims (10)

1. professional networked audio frequency and video treatment facility of large stadium is characterized in that: it comprises an apparatus for processing audio, a character overlap-add procedure device, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audio frequency and video compressing card, an audio frequency and video back-up device that connects successively; It also comprises a video process apparatus, a communication unit, and described video process apparatus is connected with character overlap-add procedure device; Described communication unit is connected with the audio frequency and video compressing card.

2. the professional networked audio frequency and video treatment facility of large stadium according to claim 1, it is characterized in that: it also comprises an audio collecting device and a video acquisition device, described audio collecting device is connected with apparatus for processing audio, and described video acquisition device is connected with video process apparatus.

3. the professional networked audio frequency and video treatment facility of large stadium according to claim 1, it is characterized in that: described apparatus for processing audio, it comprises that a DSP digital audio processor, a serial audio interface, an I2C interface, a data path, a coefficient register, a control register, an automatic frequency detect and filter coefficient selection function module, a volume adjusting function module, a L channel voice data output port and a right audio channel data-out port;

Described DSP digital audio processor is connected with control register, coefficient register, data path respectively;

Described serial audio interface is connected with serial voice data input signal cable, serial clock signal line, data path, control register respectively;

Described automatic frequency detects and is connected with serial voice data input signal cable, serial clock signal line, coefficient register, control register respectively with filter coefficient selection function module;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described volume adjusting function module is connected with controller register, data path respectively;

Described data path is connected with L channel voice data output port, right audio channel data-out port respectively;

Described L channel voice data output port, right audio channel data-out port are connected with character adder respectively.

4. the professional networked audio frequency and video treatment facility of large stadium according to claim 1, it is characterized in that: described video process apparatus, it comprises a HDMI video matrix processor, a HDMI Video Decoder, an I2C interface, a coefficient register, a control register, a HDMI video encoder, a video inputs mouth and a video-out port;

Described HDMI video matrix processor is connected with HDMI Video Decoder, HDMI video encoder, coefficient register, control register respectively;

Described I2C interface is connected with I2C clock input signal line, I2C data input signal line, coefficient register, control register respectively;

Described video inputs mouth is connected with video data input line, HDMI Video Decoder respectively, control register;

Described HDMI video encoder is connected with video-out port;

Described video-out port is connected with character adder.

5. the professional networked audio frequency and video treatment facility of large stadium according to claim 1 is characterized in that: described audio frequency and video clock synchronization circuit, its adopt chip MK2745 finish video and audio frequency synchronously.

6. the professional networked audio frequency and video treatment facility of large stadium according to claim 1, it is characterized in that: described communication unit, it comprises the antenna that a RJ45 interface that is connected with ethernet interface module and a Wi-Fi module connect, and described audio frequency and video compressing card is connected with ethernet interface module, Wi-Fi module respectively.

7. the professional networked audio frequency and video treatment facility of large stadium according to claim 1 is characterized in that: described audio frequency and video back-up device, and it is a CD writer, described CD writer is built-in with an audio frequency and video recording function module and data storage hard disk.

8. processing method of utilizing the processing audio, video data of the professional networked audio frequency and video treatment facility of the described large stadium of claim 1～7, it is characterized in that: it comprises the steps:

(1) the professional networked audio frequency and video treatment facility of a large stadium is set, opening power makes it in running order;

(2) initialization of the professional networked audio frequency and video treatment facility of large stadium;

(3) apparatus for processing audio receives and the voice data of audio collecting device collection is handled;

Video process apparatus receives and the video data of video acquisition device collection is handled;

(4) the transmission character adder of data message after step (3) is handled, sending position, area information, scheme of colour, the output format of character on image of the font of needs stacks to character stack interface function handles, give digital/analog converter alternately with result again, be converted to digital signal;

(5) with the digital signal of step (4), be transmitted to the audio frequency and video clock synchronization circuit and handle, the data message after handling is transmitted to the audio frequency and video compressing card; At first, the data message of receiving is divided into polylith, every is divided into a size and is the video sequence of the audio, video data formation of 8*8, described audio frequency and video compressing card adopts DCT based encode device that the data message of receiving is compressed, described DCT based encode device comprises a DCT variator, a quantizer and an entropy coder, wherein, the DCT variation function of DCT variator employing is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{i=0}{\overset{7}{\mathrm{\Σ}}}\underset{j=0}{\overset{7}{\mathrm{\Σ}}}f(i,j)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0;

Otherwise C (u), C are (v)=1;

F (i, j) in the video sequence that constitutes for the audio, video data of 8*8, when the audio, video data of pre-treatment, wherein, and i, j is the locus of audio, video data in the video sequence of 8*8 when pre-treatment;

(6) data message after step (5) processing is transmitted to audio frequency and video back-up device, communication unit respectively, described audio frequency and video back-up device backs up audio, video data;

One audio frequency and video decompressing device and a playing device are set, and described communication unit sends to the audio frequency and video decompressing device with audio, video data, sends playing device again to and plays in real time;

Described audio frequency and video decompressing device, adopt DCT base decoder that the data message of receiving is decompressed, described DCT based encode device comprises the contrary variator of an entropy decoder, an inverse DCT and a DCT, and wherein, the DCT inversion function that the contrary variator of DCT adopts is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{u=0}{\overset{7}{\mathrm{\Σ}}}\underset{v=0}{\overset{7}{\mathrm{\Σ}}}F(u,v)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: when u, v=0, Otherwise C (u), C are (v)=1.

9. processing method according to claim 8, it is characterized in that: it specifically comprises the steps: described step (2)

(21) automatic frequency of apparatus for processing audio detects and filter coefficient selection function module, and the audio, video data of voice data input signal cable is analyzed; Send order again to the DSP digital audio processor, send order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperate coefficient register again, finish the setting of filter coefficient;

(22) video process apparatus sends order to the I2C interface by I2C clock input signal line, I2C data input signal line, cooperates coefficient register, finishes the setting of image data acquiring frame rate, image analytic degree parameter;

(23) character adder is set its character size, the character location parameter on image;

(24) audio frequency and video compressing card is set its compression parameters;

There is not sequencing between described step (21), step (22), step (23) and the step (24).

10. processing method according to claim 8, it is characterized in that: it specifically comprises the steps: described step (3)

(31) audio frequency and video processing unit, audio, video data to the voice data input signal cable is analyzed, analysis result is sent to the DSP digital audio processor, described DSP digital audio processor is according to analysis result, send order to the volume adjusting function module of the adjusting that realizes volume, again volume is regulated the result and send to data path;

The voice data information that audio collecting device is gathered, pass through serial audio interface, after handing to the data path processing that is provided with equalizer, filter, send to character adder through L channel voice data output port, right audio channel data-out port respectively again;

(32) video process apparatus, video acquisition device sends to the HDMI Video Decoder with the video data of gathering by the video inputs mouth and handles, the processed video data message is transmitted to HDMI video matrix processor to be handled, the processed video data message is transmitted to the HDMI video encoder handles, send to character overlap-add procedure device finally by video-out port;

Described step (31), step do not have sequencing between (32).

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